Thanks for clearing up my doubts.
My friend has probably mistaken the 737s' DC operated APU fuel boost pump with the A320s'.
With regards to the negligible fault messages , how would you differentiate them from those that require corrective action if there are no ECAM warnings to correlate with?
Please advise if I have the following wrong:
1. ECAM warnings consist of Class 1 and 2 faults only. These are also primary and independent faults.
2. Failure messages consist of Class 1 and 2 faults only.
3. A PFR shows Class 1 and 2 faults only.
3. Class 3 faults can only be accessed on ground via the Avionics Status Page using the MCDU
4. Class 1 and 2 Failure messages and ECAM warnings can be accessed in flight via the Current Leg Report and Current Leg ECAM Report respectively using the MCDU
5. Only Class 2 faults are indicated under the Maintenance item of the ECAM Status Page which is only available on ground when both engines are stopped.
Cheers